62 organisations, and the reason they came back.

Industrials, energy and pipeline operators, and their portfolio holders.

• Aker Kvaerner USA
• Alcoa
• Areva NP Inc.
• Chemical Land Holdings Inc.
• Columbia Gas Transmission Corp.
• Columbia Gulf Transmission Co.
• DuPont Specialty Chemicals Intermediates
• Envirosafe Services Inc.
• General Electric
• GTE Products Corp.
• Halliburton Energy Services
• ING Clarion
• Maxus Energy Corp.
• Merck & Co., Inc.
• OSRAM Sylvania
• Sediment Management Work Group
• Texas Eastern Pipeline Co.
• Transcontinental Gas Pipe Line Corp.
• Transit America / Budd Co.

Developers, manufacturers, institutions and municipalities across the mid-Atlantic.

• Ames Reese Inc.
• Chester County Intermediary Unit
• Cohen Shapiro
• Con-Tech Inc.
• Concord Township, PA
• Copperhead Chemical Company Inc.
• Craftsman Machine Co.
• De Maximus Inc.
• E. Kahn Development Corp.
• Elverson National Bank
• Emrich & Dittmar
• Environmental Standards Inc.
• Fidelity Commercial
• Glatfelter
• J & L Building Materials Inc.
• J. Loew & Associates
• Jefferson Health Systems
• Mack Oil Company
• Mulry & Cresswell Environmental Inc.
• Plummer Precision Optics
• REI Inc.
• Sartomer Co. Inc.
• Schorn Construction Company
• Source Realty Group LLC
• Urban Outfitters
• Westtown School District
• White Horse Village

Counsel retaining AEM for technical support, peer review and expert testimony.

• Ballard Spahr Andrews & Ingersoll LLP
• Barnard Mezzanotte Pinne and Seelaus
• Carson & Fitzgerald
• Covington & Burling LLP
• Cozen & O'Connor
• Drinker Biddle & Reath LLP
• Harrington & Caldwell P.C.
• Lentz Cantor & Massey Ltd.
• Manko Gold Katcher & Fox
• Milberg Weiss Schulman Bershad
• Miles & Stockbridge P.C.
• Pepper Hamilton LLP
• Ropes & Gray LLP
• Scarpello & Ailing Ltd.
• Shearman & Sterling LLP
• Wyatt Tarrant & Combs LLP